Ground Man (グランドマン Gurandoman) is one of the first three selectable bosses in Mega Man & Bass, alongside Astro Man and Cold Man. He is a Robot Master created by King to excavate ruins, but sometimes hoards treasure that he finds for his own personal collection without consulting his leader. He likes excavating with a passion and only stops when he is ordered to do so. He is said to be the most powerful robot in King's army. His Special Weapon is the Spread Drill, a drill-like missile that can separate into smaller drills. He can also transform into a small drill-shaped machine, being invincible during the attack, and uses a giant drill when in the ceiling. Ground Man is inhospitable and rarely speaks, but he is a deep thinker. He enjoys finding rare treasures while excavating, and he dislikes coarse ground and underground water, which get in the way of his work.